Steam-boiler



45 the open air.

f UNITED STATES lLOUIS I-IOPPE, OF APRINCETON, MINNESOTA.

STEAM-Boden.

f srnorrrcnrion forming pamper Letters Patent No. 287,832, datedNovember 6,1883'.

f Application filed Jnlyifl, 1882. (No model.) f

To tZZ 'tl/hom it'nmg/ concern: l

` Beit known that I, Louis Horrn, of Princeton, county of Mille Lacs,and State of Minneseta, have invented` a new and Improved`fgStea-m-Boiler; and I do hereby declare that i thefollowing is a full,clear, and exact description of the same, reference being made to the Yaccompanying drawings, and to letters of reference marked thereon. p

My invention relates to improvements in steam-boilers 3 and it refersparticularly to th at class of boilers known as tubular upright, and ithas for its object the production oiaboiler which shall be in a greatnieasure free'fromA objections so common to ordinary boilers, arisingfrom leaking tubes and lime deposits, at

`the saine time capable of being run in the most economical manner, andwith the smallest amount of care and attention. I accomplish `theseresults by means ofthe apparatus illustratedwin the accompanyingdrawings, in 'which- Figure ly represents the complete boiler ready foruse; Fig. 2,`alo1'1gitudinal section of 1 25 the `same through thecenter, vand showing the arrangement of the tubes, smoke-drum,sparkarrester, Ste. Fig. 3 is a view of thebottom plate, showing theopenings for the insertion of the tubes; Fig. 4, the method of packing3o the ends of the tubes for the purpose of guarding against tliie badeffects of expansion and contraction from heat-and cold.

A, Fig. 2, is a fire-box constructedin the ordinary manner, the top ofwhich may be l g5 arched, if desired, the better to resist the downwardpressure of steam. Insertedin the top `of the hre-box are a suitablenumber of iiues or tubes, for the purpose of carryingoff the smoke andunconsumed gases. The upper 4o ends of these tubes are inserted inthebottom of a chamber, B, `for the reception ofthe smoke, which ascendsfrom thence through a drum, c,"

` provided-with aydamper, D, thence through ar spark-arrester, E; thenceto 'smoke-funnel and F is a copper plate through which the tubes pass.This plate is intended to `receive the-greater part ofthe lime and othercalcareous deposits from the water, to which they only slightly adhere,and from 5o which they ymay be removed by the use of a ,l-PATENT OFFICE,

liaust-pipe of'the engine, if deemed necessary 55 l for theextinguishment of sparks, or to aid in the draft of the furnace. On theopposite side of said druln, and at the bottom of the curve, is" anotheropening, H, for the insertion of a suitable ycock or valve for theremoval of any 6o condensed water that maycollect within the drum whenused as an exhaust for the escaping steam.

f In Fig. 4 is given an enlarged view of the method adopted i'orbrushing the holes in the ,65 yplates for the reception of the lines ortubes, by which a lining of copper is placed between y the tube and theiron of the boiler-plates. This is simply the insertion in opening ofthe plates for the reception of the tubes of an eye- 7o let of copper,the 'flanges of which are closed down upon the plates on both sides, asshown :in the drawings.` Through the copper eyelets lbetweentheboiler-plates and the iange on the end ot' the tubes may-be swaged orcalked up, so as to insure perfectly tight joints-a 8orv matter oftenoi' the utmost importance. It will bereadily seen by inspecting Fig. '2that the low-water line in the boiler lis several inches above the topsof the dues-an arrange; ment not in use in any boiler known to me, 85but one of great importance, as by keeping the ends always covered withwater they will neither burn nor rust out. The life of the boiler isconsequently.prolonged and leakage prevented. y 90 Attached tothe outerarm of the chamber is an arrangement (not clearly sli-own in thedrawings) for regulating the draft by opening the smoke-chamberBextended downward, as .ioo

shown for the protection of the upper ends of the ues or tubes, andprovided with a limestated. eateher, F, arranged substantially as shown,This specification signed and witnessed this and for the purpose 'uamed.I 19th day of June, 1882.

2. Au upright tubular steamboiler so e011- structed as to have the upperends of the tubes or ues always below the water-line of Vithesses: theboiler, and properly fitted with a lime-V J. S. BRADY, catcher or plateof copper or metal, F, sub- HERMAN NEUMAN.

Louis HOPPE.

stantially as shown, and for the purpose 1o Correction in Letters PatentNo. 287,832.

It is hereby certified that; in Letters Patent No. 287 ,832, grantedNovember 6, 1883, upon the application of Louis Hoppe, of Princeton,Minnesota, for an improvement in Steam Boilers, errors appear in theprinted specification requiring correction as follows: In line 65, page1, the word brushing should read bushing; and in line 74, same page, theword brushings should read bushings; and that the proper correctionshave been made in the files and records pertaining to the case in thePatent Office, and should be read in the patent to make it conformthereto.

Signed, countersigned, and sealed this 22d cla-y of J a-nuary, A. D.1884.

i [SEAL] M. L. JOSLYN,

Gonnbersigned BENJ. BUTTERWORTH,

Commissioner of Patents.

Acting Secretary qf the Interior.

